We have developed an ethanol-free formulation method of [18F] florbetapir ([18F] AV-45) using a commercially available automated JFE multi-purpose synthesizer. We have also evaluated the radiochemical stability in an ethanol-free solution of [18F] AV-45 under visible light irradiation and dark conditions by comparison with a conventional 10% ethanol solution of [18F] AV-45.[18F] AV-45 was obtained with a radiochemical yield of 55.1 Æ 2.2%(decay ...